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  <div class="section" id="psa-cryptography-api-version">
<h1>PSA Cryptography API 1.0</h1>
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<ul>
<li class="toctree-l1"><a class="reference internal" href="overview/intro.html">Introduction</a></li>
<li class="toctree-l1"><a class="reference internal" href="overview/goals.html">Design goals</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#suitable-for-constrained-devices">Suitable for constrained devices</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#a-keystore-interface">A keystore interface</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#optional-isolation">Optional isolation</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#choice-of-algorithms">Choice of algorithms</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#ease-of-use">Ease of use</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/goals.html#example-use-cases">Example use cases</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#network-security-tls">Network Security (TLS)</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#secure-storage">Secure Storage</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#network-credentials">Network Credentials</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#device-pairing">Device Pairing</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#secure-boot">Secure Boot</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#attestation">Attestation</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/goals.html#factory-provisioning">Factory Provisioning</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="overview/functionality.html">Functionality overview</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#library-management">Library management</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#key-management">Key management</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#volatile-keys">Volatile keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#persistent-keys">Persistent keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#key-identifiers">Key identifiers</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#recommendations-of-minimum-standards-for-key-management">Recommendations of minimum standards for key management</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#usage-policies">Usage policies</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#symmetric-cryptography">Symmetric cryptography</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#single-part-functions">Single-part Functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#multi-part-operations">Multi-part operations</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#message-digests-hashes">Message digests (Hashes)</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#message-authentication-codes-macs">Message authentication codes (MACs)</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#encryption-and-decryption">Encryption and decryption</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#authenticated-encryption-aead">Authenticated encryption (AEAD)</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#key-derivation">Key derivation</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#example-of-the-symmetric-cryptography-api">Example of the symmetric cryptography API</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#asymmetric-cryptography">Asymmetric cryptography</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#asymmetric-encryption">Asymmetric encryption</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#hash-and-sign">Hash-and-sign</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/functionality.html#key-agreement">Key agreement</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/functionality.html#randomness-and-key-generation">Randomness and key generation</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="overview/sample-arch.html">Sample architectures</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/sample-arch.html#single-partition-architecture">Single-partition architecture</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/sample-arch.html#cryptographic-token-and-single-application-processor">Cryptographic token and single-application processor</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/sample-arch.html#cryptoprocessor-with-no-key-storage">Cryptoprocessor with no key storage</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/sample-arch.html#multi-client-cryptoprocessor">Multi-client cryptoprocessor</a></li>
<li class="toctree-l2"><a class="reference internal" href="overview/sample-arch.html#multi-cryptoprocessor-architecture">Multi-cryptoprocessor architecture</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="overview/conventions.html">Library conventions</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/conventions.html#error-handling">Error handling</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#return-status">Return status</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#behavior-on-error">Behavior on error</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/conventions.html#parameter-conventions">Parameter conventions</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#pointer-conventions">Pointer conventions</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#input-buffer-sizes">Input buffer sizes</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#output-buffer-sizes">Output buffer sizes</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#overlap-between-parameters">Overlap between parameters</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#stability-of-parameters">Stability of parameters</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/conventions.html#key-types-and-algorithms">Key types and algorithms</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/conventions.html#structure-of-key-and-algorithm-types">Structure of key and algorithm types</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/conventions.html#concurrent-calls">Concurrent calls</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="overview/implementation.html">Implementation considerations</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/implementation.html#implementation-specific-aspects-of-the-interface">Implementation-specific aspects of the interface</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#implementation-profile">Implementation profile</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#implementation-specific-types">Implementation-specific types</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#implementation-specific-macros">Implementation-specific macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/implementation.html#porting-to-a-platform">Porting to a platform</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#platform-assumptions">Platform assumptions</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#platform-specific-types">Platform-specific types</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#cryptographic-hardware-support">Cryptographic hardware support</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/implementation.html#security-requirements-and-recommendations">Security requirements and recommendations</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#error-detection">Error detection</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#indirect-object-references">Indirect object references</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#memory-cleanup">Memory cleanup</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#managing-key-material">Managing key material</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#safe-outputs-on-error">Safe outputs on error</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#attack-resistance">Attack resistance</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="overview/implementation.html#other-implementation-considerations">Other implementation considerations</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/implementation.html#philosophy-of-resource-management">Philosophy of resource management</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="overview/usage.html">Usage considerations</a><ul>
<li class="toctree-l2"><a class="reference internal" href="overview/usage.html#security-recommendations">Security recommendations</a><ul>
<li class="toctree-l3"><a class="reference internal" href="overview/usage.html#always-check-for-errors">Always check for errors</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/usage.html#shared-memory-and-concurrency">Shared memory and concurrency</a></li>
<li class="toctree-l3"><a class="reference internal" href="overview/usage.html#cleaning-up-after-use">Cleaning up after use</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="api/library/index.html">Library management reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="api/library/status.html">PSA status codes</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/library/status.html#status-type">Status type</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/library/status.html#success-codes">Success codes</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/library/status.html#error-codes">Error codes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/library/library.html">PSA Crypto library</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/library/library.html#api-version">API version</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/library/library.html#library-initialization">Library initialization</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="api/keys/index.html">Key management reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="api/keys/attributes.html">Key attributes</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/attributes.html#attribute-types">Attribute types</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/attributes.html#managing-attributes">Managing attributes</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/keys/locations.html">Key locations</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/locations.html#key-lifetimes">Key lifetimes</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/locations.html#key-identifiers">Key identifiers</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/locations.html#attribute-accessors">Attribute accessors</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/keys/types.html">Key types</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#key-categories">Key categories</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#symmetric-keys">Symmetric keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#rsa-keys">RSA keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#elliptic-curve-keys">Elliptic Curve keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#diffie-hellman-keys">Diffie Hellman keys</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/types.html#attribute-accessors">Attribute accessors</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/keys/usage.html">Key policies</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/usage.html#key-usage-flags">Key usage flags</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/usage.html#attribute-accessors">Attribute accessors</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/keys/algorithms.html">Algorithms</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/algorithms.html#algorithm-categories">Algorithm categories</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/algorithms.html#attribute-accessors">Attribute accessors</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/keys/management.html">Key management functions</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/keys/management.html#key-creation">Key creation</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/management.html#key-destruction">Key destruction</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/keys/management.html#key-export">Key export</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="api/ops/index.html">Cryptographic operation reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="api/ops/hashes.html">Message digests</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/hashes.html#hash-algorithms">Hash algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/hashes.html#single-part-hashing-functions">Single-part hashing functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/hashes.html#multi-part-hashing-operations">Multi-part hashing operations</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/hashes.html#support-macros">Support macros</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/hashes.html#hash-suspend-state">Hash suspend state</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/macs.html">Message authentication codes (MAC)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/macs.html#mac-algorithms">MAC algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/macs.html#single-part-mac-functions">Single-part MAC functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/macs.html#multi-part-mac-operations">Multi-part MAC operations</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/macs.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/ciphers.html">Unauthenticated ciphers</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ciphers.html#cipher-algorithms">Cipher algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ciphers.html#single-part-cipher-functions">Single-part cipher functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ciphers.html#multi-part-cipher-operations">Multi-part cipher operations</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ciphers.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/aead.html">Authenticated encryption with associated data (AEAD)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/aead.html#aead-algorithms">AEAD algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/aead.html#single-part-aead-functions">Single-part AEAD functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/aead.html#multi-part-aead-operations">Multi-part AEAD operations</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/aead.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/kdf.html">Key derivation</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/kdf.html#key-derivation-algorithms">Key derivation algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/kdf.html#input-step-types">Input step types</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/kdf.html#key-derivation-functions">Key derivation functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/kdf.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/sign.html">Asymmetric signature</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/sign.html#asymmetric-signature-algorithms">Asymmetric signature algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/sign.html#asymmetric-signature-functions">Asymmetric signature functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/sign.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/pke.html">Asymmetric encryption</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/pke.html#asymmetric-encryption-algorithms">Asymmetric encryption algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/pke.html#asymmetric-encryption-functions">Asymmetric encryption functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/pke.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/ka.html">Key agreement</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ka.html#key-agreement-algorithms">Key agreement algorithms</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ka.html#standalone-key-agreement">Standalone key agreement</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ka.html#combining-key-agreement-and-key-derivation">Combining key agreement and key derivation</a></li>
<li class="toctree-l3"><a class="reference internal" href="api/ops/ka.html#support-macros">Support macros</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="api/ops/rng.html">Other cryptographic services</a><ul>
<li class="toctree-l3"><a class="reference internal" href="api/ops/rng.html#random-number-generation">Random number generation</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="appendix/example_header.html">Example header file</a><ul>
<li class="toctree-l2"><a class="reference internal" href="appendix/example_header.html#psa-crypto-h">psa/crypto.h</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="appendix/specdef_values.html">Example macro implementations</a><ul>
<li class="toctree-l2"><a class="reference internal" href="appendix/specdef_values.html#algorithm-macros">Algorithm macros</a></li>
<li class="toctree-l2"><a class="reference internal" href="appendix/specdef_values.html#key-type-macros">Key type macros</a></li>
<li class="toctree-l2"><a class="reference internal" href="appendix/specdef_values.html#hash-suspend-state-macros">Hash suspend state macros</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="appendix/history.html">Changes to the API</a><ul>
<li class="toctree-l2"><a class="reference internal" href="appendix/history.html#release-information">Release information</a></li>
<li class="toctree-l2"><a class="reference internal" href="appendix/history.html#document-change-history">Document change history</a><ul>
<li class="toctree-l3"><a class="reference internal" href="appendix/history.html#changes-between-1-0-beta-1-and-1-0-beta-2">Changes between <em>1.0 beta 1</em> and <em>1.0 beta 2</em></a></li>
<li class="toctree-l3"><a class="reference internal" href="appendix/history.html#changes-between-1-0-beta-2-and-1-0-beta-3">Changes between <em>1.0 beta 2</em> and <em>1.0 beta 3</em></a></li>
<li class="toctree-l3"><a class="reference internal" href="appendix/history.html#changes-between-1-0-beta-3-and-1-0-0">Changes between <em>1.0 beta 3</em> and <em>1.0.0</em></a></li>
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<li class="toctree-l2"><a class="reference internal" href="appendix/history.html#planned-changes-for-version-1-0-x">Planned changes for version 1.0.x</a></li>
<li class="toctree-l2"><a class="reference internal" href="appendix/history.html#future-additions">Future additions</a></li>
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